Audio Attribute

In the Audio attribute, specify which sounds the particle system
emits and when.

Audio Attribute Parameters for CPU Emitters

Name

Description

Start Trigger

Selects the start trigger sound asset to play with the
emitter.

Stop Trigger

Selects the stop trigger sound asset to play with the
emitter.

Sound FXParam

Applies the modulate value to the sound. The effect depends on how
you define the particlefx parameter for the
individual sound. Depending on the sound, this value might affect
volume, pitch, or other attributes. You can set a
Random value and Strength Over
Emitter Lifetime curve.

Valid values:
0+

Default value: 1

Sound Control Time

EmitterLifeTime – Plays for
the length of the emitter's lifetime.

EmitterExtendedLifeTime –
Plays for the length of the emitter's lifetime plus all
particles' lifetimes (until all particles die).

EmitterPulsePeriod – Plays for
the length of the pulse period.

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